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62 lines
1.6 KiB
Plaintext
62 lines
1.6 KiB
Plaintext
/*
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* Author....: Joseph D. Booth, Sr.
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* CIS ID....: 72040,2112
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*
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* This is an original work by Joseph D. Booth Sr. and is placed in the
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* public domain.
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*
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* Modification history:
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* ---------------------
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*
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* Rev 1.1 15 Aug 1991 23:04:38 GLENN
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* Forest Belt proofread/edited/cleaned up doc
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*
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* Rev 1.0 13 Jun 1991 15:21:36 GLENN
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* Initial revision.
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*
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*/
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FUNCTION ft_Sqzn( nValue, nSize, nDecimals )
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LOCAL tmpstr, cCompressed, k
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__defaultNIL( @nSize, 10 )
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__defaultNIL( @nDecimals, 0 )
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nValue := nValue * ( 10 ^ nDecimals )
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nSize := iif( ( nSize / 2 ) != Int( nSize / 2 ), nSize + 1, nSize )
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tmpstr := Str( Abs( nValue ), nSize )
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tmpstr := StrTran( tmpstr, " ", "0" )
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cCompressed := hb_BChar( Val( hb_BSubStr( tmpstr, 1, 2 ) ) + iif( nValue < 0, 128, 0 ) )
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FOR k := 3 TO hb_BLen( tmpstr ) STEP 2
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cCompressed += hb_BChar( Val( hb_BSubStr( tmpstr, k, 2 ) ) )
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NEXT
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RETURN cCompressed
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FUNCTION ft_Unsqzn( cCompressed, nSize, nDecimals )
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LOCAL tmp := "", k, cValue, multi
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__defaultNIL( @nSize, 10 )
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__defaultNIL( @nDecimals, 0 )
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nSize := iif( ( nSize / 2 ) != Int( nSize / 2 ), nSize + 1, nSize )
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IF hb_BCode( cCompressed ) > 127
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tmp := Str( hb_BCode( cCompressed ) - 128, 2 )
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multi := -1
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ELSE
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tmp := Str( hb_BCode( cCompressed ), 2 )
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multi := 1
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ENDIF
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FOR k := 2 TO hb_BLen( cCompressed )
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tmp += Str( hb_BCode( hb_BSubStr( cCompressed, k, 1 ) ), 2 )
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NEXT
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tmp := StrTran( tmp, " ", "0" )
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cValue := hb_BSubStr( tmp, 1, nSize - nDecimals ) + "." + hb_BSubStr( tmp, nSize - nDecimals + 1 )
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RETURN Val( cValue ) * multi
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